Ejector



5 Jan. 2, 1923.

I 1,440,595. 1. W. GRANTLAND.

EJECTOR.

FILED FEB. 27. 1919.

I, null-11m j Patented Jan. 2, l923,

JOHN W. GRANTLAND, 0F CINCINNATI, OHIO.

EJECTOR.

To all whom it may concern:

Be it known that 1, JOHN W. GRANTLAND, a citizen of the United States,and residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented a new and useful Improvement in Ejector-s, of which thefollowing specification is a full disclosure.

This invention relates to an ejector and more particularly to a deviceof this type as a part of a steam locomotive engine equipment serving asa sprinkler hose for sprinkling fuel and for other purposes Theprinciple employed, utilizes the velocity of a steam jet to propel abody of water through a combining tube, to create a suction against thewater supply and impart velocity to the delivered water.

lhe object of the invention is to provice an ejector having a pair ofnormally closed independent water controlling check valves, one servingas a back pressure check valve and the other as a water supply valveautomatically operated by the pressure of the steam line.

Another object is toprovide an automatic steam operated water supplyvalve actuator.

A further object is to provide removable strainers in the water andsteam conduits to obviate a fouling of" the valves A further object isto provioe means for draining the ejector. p c

The features of the invention will be more fully set forth in thedescription of the accompanying drawings forming a part i of thisspecification, in which: I

Fig 1 is avertical section of the ejector arranged for installationbelow the supy level asa non-lifter.

Fig 2 1s detail section on line 2, 2, Jig, 1;

Fig. is a. detail section of a form of combining tube, interchangeablewith that shown in 1, when the ejector installed above the supply waterlevel as alitter.

Referring to the body portion 10 is divided to form a water supplyconduit or chamber 11, a valve chamber 12,21 suction chamber 13 and, asteamfi'conduit 14; the valve chamber l2 cjonneoting the supply andsuction chambers through valve controlled ports. A suitableunioncoupling 15 is provided for connecting with the water tank of theengine-tender. The lower wall of the valve chamber 12 is formed withports 16,

'17, defining; valve seats 18, 19, These ports are normally closed bygravity valves 20, 21,, each having a valve stem slidable Within guideplugs 22, 23, screw threaded into the upper portion of the body 10. Acombining tube 24 is screw-threaded into the lower'wallof the suctionchamber 13 and a steam nozzle 25 is screw threaded into the wall 0? thesteam conduit'in axial alignment with the combining tube, with its lowerdis charge end positioned in closeproxi mity to the entrance throatthereof.

Slidably mounted within a bore, extending; upwardly from. the steamconduit, is a valveactuator 26, having a stem 27 projecting into thesuction chamber in axial alignment with the water supply valve 21, andthe lower end'of said actuator is provided with depending legs 28 tolimit its downward movement and cooperating with the stem 27 to guidethe actuator.

In Fig, l, the ejector is fitted for installation below the tank waterline, and, in this instance, it is desirable to provide meansfordraining; the ejector after use. Therefore, 1 provide a drain fitting 30connected to the combining tube 24: by a union 31 and provided with anautomatic drain valve 32 norare shown in the form of a perforated plate,

but it is obvious that they may be formed of Y wire screen or othersuitable straining niaterial. These strainers are inserted transverselyacr'oss the water and steam conduits respectively through openings inthe body 10; Each opening is olosedfby a screw substantially equal tothe area of said con- I duits, so as not to retard the flow of water orsteam therethrough. i i

The operation of the ejector is as follows: In the installation 01" theejector, shown in Fig. 1, below the tank water level, the

water conduit 11 and the valve chamber 12.

will be filled with water. The steam is turned on and will raise theactuator 26 to open the water supply valve 21 and jetting into thecombining tube 24: Will create asuction in the suctionchamber 13 andalso in the valve chamber 12, this suction lifting the back pressurevalve 20 and drawing water from the supply tank, the steam jet combiningwith the water in the combining tube 24c and imparting velocityjto thedischarge, Immediately the ejector is in operation, the drain valve isautomatically closed by the pressure of the discharge The sprinklingline is connected to the threaded end ll of the drain fitting 30.

,lVhenever the valve on the sprinkling hose nozzle is shut off, previousto the shutting off of the steam to'the ejector, a back pressure wouldbe created inthe ejector and the steam would blow back into the supplytank, were it not for the back-pressure valve 20, which acts as a checkvalve to prevent'tl'iis actioin When the ejector is installed above thesupply tank water level, no means for draining need be provided, and forsuch installa tion, I providea modified form of combining tube 42, asshown in Fig. 3, which is interchangeable with the tube 24%: and drainfitting 30, shown in Fig. 1, with the sprinkling hose directly attachedover the combining tube 42.

In this instance, previous to the first operation, the valve chan'iberis emptv and the suction created by the steamjet will raise the backpressure valve 20 and draw water from the supply tank, After the firstoperation,

the water in the valve chamberis retained and serves as a priming mediumfor subse quent operations: i

' Having described my invention, I claim;

1, An ejector comprising hollow body:

interiorly divided providing a water inlet conduit, a suction chamber,and a cross chamber connecting said inlet conduit and suction chamber, acheck valve controlling the communication between said inlet and crosschamber, and from the latter, a second check valve controllingcommunication between said suction and cross chambers, and

from the latter, a combining and delivery chau lbcr n on obstructi ve Cable strainer t the normal capac-i 3 lube connecting with said suction.chamber, a piston chamber having a nozzle tor discharging steam towardthe mouth of said for receiving a strainer, a suction chamber connectingwith said water supply conduit, a check valve controlling the flow ofwater to the suction chamber and open against the pressure of thein-coming water, a combinlng tube, a steam nozzle and a steanr-actuatedmember for opening said checkvalve,

removable strainers transversely positioned 7 across the supply andsteam conduits at their respective enlarged portions 3. An ejectorcomprising a body'provid mg a water supply conduit, a steam conduit anda suction chamber, a supply valve 0011-.

trolling the flow of water to the' s'uction chamber, a combining tube, asteam nozzle, and a steam operated supply valve actuator having apiston-head portion, a stem portion and spaced depending legs projectingfrom the head portion providing an extended guide surface and limitingthe movement of the actuator in one direction.

t. In anej'ector, a casing providing adjacent water inlet, Water suctionand piston chaniibers, and a valve chamber connecting said water inletand suction chamber, check valves for controlling the inlet and "outletports of said valve chamber, sealing against discharge from said valvechamber in relatively opposing directions, a steam nozzle connectingwith said piston chamber and leading into the suction chamber, a pistonin said piston. chamber for operating the valve covering the outlet portof said valve} chamber, a steam inlet communicating with said pistonchamber and steam nozzle, having a strainer chamber and transverselyremovable strainer within said'steam strainer oi" steam inlet caparity.v

in an ejector, a casing providing ad jacent water inlet,water suctionand piston chambers, said nlet ch nber having an enz ed strainerreceivig nsversely within said ened portion 0' an area non-obstructive of j ofsaid inlet chamber, and avalve chamber connecting said water inlet andsuction chambers,- check valves for controlling the inlet andoutletports of said portion, a removvalve chamber, sealing against dischargefrom said valve chamber in' relatively opposing directlons, a steamnozzle connecting with said piston chamber and" leading into the suctionchamber, a piston in' said piston chamber for operating the valvecovering In Witness whereof, I hereunto subscribe the outlet port ofsaid valve chamber, a my name, attested by the two subscribing steaminlet communicating with said piston Witnesses. 1 chamber and steamnczzle, having a strainer chamber and transversely removable strainerWitnesses: within said steam strainer chamber non-cb- CLARENCE B.FOSTER, structive of steam inlet capacity. L. A. BECK.

JOHN GRAN A D;

